.my-card-enter, .my-card-appear {
  opacity: 0;
  transform: scale(.5);
}
.my-card-enter-active, .my-card-appear-active {
  opacity: 1;
  transform: scale(1);
  transition: opacity .5s, transform .5s;
}
/* 高亮时本来就是 1 了  所以完成可以不用写 */
/* .my-card-enter-done, .my-card-appear-done {
} */

.my-card-exit {
  opacity: 1;
  transform: scale(1);
}
.my-card-exit-active {
  opacity: 0;
  transform: scale(.5);
  transition: opacity .5s, transform .5s;
}
.my-card-exit-done {
  opacity: 0;
}
